Re: [Boost-users] [boost::serialization] Howto derieve ownserialization archive? (Documentation is incomplete) [Re:want access to binary data sans bookkeeping data]

From: Robert Ramey (ramey_at_[hidden])
Date: 2007-01-22 13:53:15

Marc Wäckerlin wrote:
> Brian Stempel wrote:

> Now I started by reading the "Serialization Archive Class Reference"
> on http://boost.org/libs/serialization/doc/archive_reference.html,
> which describes how to implement my own archive.
>
> Unfortunately, if I copy the code from the "simplest possible output
> archive" there into a header file, then write a code file that does
> nothing except including that header, the result is not compilable
> (GNU g++ 4.1.2).
>
> First problem:
>
> friend class boost::archive::load_access is undefined, so I have to
> add a forward declaration:
> namespace boost {
>   namespace archive {
>     class load_access;
>   }
> }

Hmm - I looked at this again and didn't see the need for the above.
In fact, when I compiled with my other compilers - none complained.
So, though its harmless to add - I'm not sure it should be in the
example.

> Second problem (see attached test.cpp):

In compiling your/my example from the document with VC 7.1 - though
not with the other compilers at hand, I did get an error - which was
a surprise to me.  However, its a different error than the one you get.
Also none of my other compilers had a problem with this.

So my real answer to your question "What's missing?" is
"I don't know".  Both your error message from gcc 4.1 and
mine from VC 7.1 - which are different - can't be explained
by me.  So I would say we'll have to call this "under investigation"

Adding more "#includes" might seem to fix the problem.  But
the point of the example is to show what a minimal example
is - so I'm really curious as to what is going on.

You might try replacing your versions of the attached
files with the attached one and let me know what happens.

Robert Ramey

>
>> g++ test.cpp
> /usr/include/boost/archive/detail/interface_iarchive.hpp: In member
> function 'const boost::archive::detail::basic_pointer_iserializer*
> boost::archive::detail::interface_iarchive<Archive>::register_type(T*)':
> /usr/include/boost/archive/detail/interface_iarchive.hpp:54:
> error: 'instantiate_pointer_iserializer' is not a member
> of 'boost::archive::detail'
> /usr/include/boost/archive/detail/interface_iarchive.hpp:58: error:
> invalid use of undefined type 'const struct
> boost::archive::detail::basic_pointer_iserializer'
> /usr/include/boost/archive/detail/basic_iarchive.hpp:41: error:
> forward declaration of 'const struct
> boost::archive::detail::basic_pointer_iserializer'
>
> What's missing?
>
>
> Thank you
> Regards
> Marc
>
>
>
>> _______________________________________________
>> Boost-users mailing list
>> Boost-users_at_[hidden]
>> http://lists.boost.org/mailman/listinfo.cgi/boost-users 

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`
end

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`
end